Hoop-bending machine



(No Model.)

G. E. SMITH. HOOP B ENDI NG MACHINE.

. Patented Dec. 1-1'. 1883.

UNITED STATES PATENT Urtrcn.

GEORGE E. SMITH, OF MIDDLIEPORT, NEIV YORK.

HOOP-SENDING MACHINE.

SPECIFICATION forming part off-Letters Patent No. 289,936, dated December 11, 18.83.

Application filed April 4, 1863. (Nomodeh) To all 1071,0722 it may concern:

Be it known that I, GEORGE E. SMITH, a citizen of the United States, residing at Middleport, in the county of Niagara and State of New Yorlghave invented certain new and useful Improvements in Hoop-Bending Machines; and I do hereby declare the following to be a full, clear, and exact description of the inven tion, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in that class of hoop-bending machines where in an endless belt passes around a. system of rollers and bears against arevolving drum, around which the hoop-poles are coiled by passing between the tight belt and the'face of the drum. V f

The object of the inventionis to provide a more economical and efficient means of varying the tension of the belt accordingly as a greater or lesser number of hoop-poles are passed and carried between the drum and'belt at a single operation.

In considering the present state of the art especial reference is made to the Letters Patent issued to myself on the 12th day of October, A. D. 1869, and numbered 95,845. i

In the accompanying drawings, Figure 1 is a side and Fig. 2 a rear perspective view of a hoop-bending machine of the class above described with my improvements incorporated therein, like letters referring to like parts in the two views.

A A representthe two sides of the frameof the machine; B the upper cross-bar, and G the lower cross-bar, of the frame.

D D represent two rollers, suitably j ournaled in the frame, and E a larger roller or drum, aroundwhich theh'oop-poles are passed in the process of coiling or bending.

I is the endless belt, which passes around the rollers D D, and also the tension-roller F, and bears against the drum E, so as to supply the pressure needed for the bending of the hoops. I

G G are bow-springs, with re-enforces g g. Each spring is curved inwardly at its lower chamber.

end to form an eye, through which passes the bolt k, whereby each spring is secured between the arms of the slide IL This slide has a longitudinal slot, is, by means of which the slide is held in place with its arms at a greater or lesser distance from the edge of the upright A when clamped by a bolt, coming through from the upright, and-provided with a screw-nut and washer. The up per end of each spring'is twice bent at a right angle, once outwardly and once downwardly, so as to give strength and finish to the end. Threaded'eyes g g are provided for the reception of a handscrew, H, which bears against the base of a recess orchamber, a, formed in the edge of the upright A, the edge being there made broad to afford room forthe By turning the hand-screw to the right the end of the spring is made to set out from the edge of the upright for the purpose of increasing the tension upon the'band I.

, J ournal-boxes f f are formed upon the outer surface of the re-enforces g g, for the purpose of carrying the tension-roller F. 1

Having thus described my invention, what I claim as new and useful, and desire to secure by Letters Patent, is

1. In .hoopbending machines, the hereindescribed pair of bow-shaped springs, located one at each end of the tension-roller, and supporting the same by a collar attached to the center and front of each spring and slipped upon the axle of said roller, the ends of each spring adj ustably bearing against the edge of the adjacent upright post near the head and the foot of said post, for the purpose of regulating the tension of the endless belt by whose pressure and curvilinear motion the hoops are bent.

2. In hoop-bending machines, the combination consisting of the herein-described bowshaped springs carrying the tension-roller and bearing against the upright posts,-the hereindescribedcollars by which the tension-roller horizontally in the faces of the upright posts upon one end of the horizontal slides which to permit the drum to be carried toward or work upon the upright posts, for the purpose from the tension-roller, the herein-described of regulating the tension of the endless belt hand-screws bearing against the upright posts by which the bending" of hoops is effected. I 5 5 and working through the upper ends of the In testimony whereof Iziffix my signaturein bow shaped springs, the herein described presence of two witnesses.

chambers or recesses formed in the upper part of the edges of the upright posts, to receive the (1 SMITH handscrews by which the upper ends of the \Vitnesses: iobow-springs are retained and adjusted, and I SAML. E. I'IISCOX,

the herein-described journal-boxes formed l THEO. llL-XCINTIRE. 

